Yes we went through that. Battery was fine, but replaced and went through all the replacement procedure. Have sent you software from my 3500 as well as tried using your software to put key code in. etc etc
The screen ranomly only has AOA show up when randomly in #4 calabration screen. If it is dimmed out on position 4 on calibration screen it also doesnt show up on the screen when you exit out of calibration screen.
Ric